Which 1969 comedy, directed by Leonid Gaidai, features a trio of small-time crooks—Coward, Fool, and Pro—in a series of satirical vignettes about bootlegging, smuggling, and gambling?

• A Kidnapping, Caucasian Style
• B Operation Y
• C Ivan Vasilievich Changes Profession
• D The Diamond Arm ✓

'The Diamond Arm' (Бриллиантовая рука) starring Yuri Nikulin, is one of the highest-grossing domestic films of all time and a staple of television schedules.